While graphing the inequality y≥−2, which of the following correctly describes its graphical representation?
a) A solid horizontal line y=−2 with shading below the line.
b) A dashed horizontal line y=−2 with shading above the line.
c) A solid horizontal line y=−2 with shading above the line.
d) A solid vertical line x=−2 with shading to the right of the line.